A shared accretion instability for black holes and neutron stars

Vincentelli, F. M.; Neilsen, J.; Tetarenko, A. J.; Cavecchi, Y.; Castro Segura, N.; del Palacio, S.; van den Eijnden, J.; Vasilopoulos, G.; Altamirano, D.; Armas Padilla, M.; Bailyn, C. D.; Belloni, T.; Buisson, D. J. K.; Cúneo, V. A.; Degenaar, N.; Knigge, C.; Long, K. S.; Jiménez-Ibarra, F.; Milburn, J.; Muñoz Darias, T.; Özbey Arabacı, M.; Remillard, R.; Russell, T.
Referencia bibliográfica

Nature

Fecha de publicación:
3
2023
Revista
Número de autores
23
Número de autores del IAC
5
Número de citas
5
Número de citas referidas
3
Descripción
Accretion disks around compact objects are expected to enter an unstable phase at high luminosity1. One instability may occur when the radiation pressure generated by accretion modifies the disk viscosity, resulting in the cyclic depletion and refilling of the inner disk on short timescales2. Such a scenario, however, has only been quantitatively verified for a single stellar-mass black hole3-5. Although there are hints of these cycles in a few isolated cases6-10, their apparent absence in the variable emission of most bright accreting neutron stars and black holes has been a continuing puzzle11. Here we report the presence of the same multiwavelength instability around an accreting neutron star. Moreover, we show that the variability across the electromagnetic spectrum—from radio to X-ray—of both black holes and neutron stars at high accretion rates can be explained consistently if the accretion disks are unstable, producing relativistic ejections during transitions that deplete or refill the inner disk. Such a new association allows us to identify the main physical components responsible for the fast multiwavelength variability of highly accreting compact objects.
Proyectos relacionados
Agujero negro en erupción
Agujeros negros, estrellas de neutrones, enanas blancas y su entorno local

Los agujeros negros y estrellas de neutrones en binarias de rayos-X son laboratorios únicos para explorar la física de estos objetos compactos. No solo permiten confirmar la existencia de agujeros negros de origen estelar a través de mediciones dinámicas de sus masas, sino que también permiten investigar el comportamiento de la materia y la

Montserrat
Armas Padilla